基于数字钻技术的岩石材料岩爆倾向性预测研究  

Rock burst proneness prediction of rock materials based on rock digital drilling

作　　者：何明明[1,2] 杨贝贝 张志强[1,2] 刘新星[2] 李宁[1,2] HE Mingming;YANG Beibei;ZHANG Zhiqiang;LIU Xinxing;LI Ning(State Key Laboratory of Eco-hydraulics in Northwest Arid Region,Xi'an University of Technology,Xi'an 710048,China;Institute of Geotechnical Engineering,Xi'an University of Technology,Xi'an 710048,China)

机构地区：[1]西安理工大学省部共建西北旱区生态国家重点实验室,陕西西安710048 [2]西安理工大学岩土工程研究所,陕西西安710048

出　　处：《中南大学学报（自然科学版）》2021年第8期2736-2747,共12页Journal of Central South University:Science and Technology

基　　金：国家自然科学基金资助项目(11902249);陕西省自然科学基金资助项目(2019JQ395);陕西省教育厅科研计划项目(20JS093)。

摘　　要：为了超前预测岩石材料岩爆倾向性,建立岩石内摩擦角与数字钻参数之间关系的解析模型,同时构建内摩擦因数与剩余弹性能指数的关系,通过室内三轴试验研究6种岩石力学参数与剩余弹性能指数之间的相关性,提出基于数字钻技术的岩石材料的岩爆倾向性的超前预测方法。研究结果表明:在不同围压状态下,各岩石下的剩余弹性能指数与弹性模量、抗压强度均呈线性正相关关系;泊松比与剩余弹性能指数呈线性负相关;预测的岩石岩爆倾向性与室内试验结果基本一致,从而验证了该方法的可靠性。In order to predict the rock burst proneness of rock materials, the analytical relationship between the internal friction angle and drilling parameters of rock was established. Meanwhile, the relationship between the internal friction coefficient and the residual elastic energy index of rock was obtained. The triaxial compression experiments were carried out to study the correlation between the residual elastic energy index and mechanical parameters of six types of rock. The prediction method for rock burst orientation of rock materials was proposed based on the digital drilling technology. The results show that the linear correlation between the residual elastic energy index and the elastic modulus and compressive strength of rock are presented at different confining pressures, and Poisson’s ratio is negatively related to the residual linearly elastic energy index. The prediction of rock burst proneness is consistent with the results from laboratory test, which verifies the reliability of the proposed method.

关 键 词：预测 内摩擦角 剩余弹性能指数 岩爆倾向性 

分 类 号：TU45[建筑科学—岩土工程]